<div id="information">
<br /><br />

<div class='tabs'>
	<ul class='nav'>
		<li><a href='<?php echo 'check.php?mode=articles '?>'>Статии</a></li>
		<li><a href='<?php echo 'check.php?mode=termins '?>'>Термини</a></li>
	</ul>
		<hr style='border: 1px dotted #222px; width: 99%; auto: 0px;' />

		<?php
		if($_GET['mode']=="articles"){
			include "includes/first_check.php";
		}

		if($_GET['mode']=="termins"){
		    echo '<br />';
			include "includes/second_check.php";
		}
		?>
</div>
</div>